What bike have you got?All I can say is mine has the mod and lever travel is only what I'd expect with all other bikes I've ridden. Clutch adjustment is fine too.
Simply changing the cable to the R1 version and routing it as straight as possible may be all you need to do as a starter and see what you think.
I’d be very interested in this , can you share some more information pleaseSlipper clutch only has 1 spring as opposed to the standard clutch having 3 - significantly lighter pull. As the slipper was standard on the XSR900, you can find kits that include only the changed clutch plates and module (I did this to my 2015 and it considerably changed the bike) compared to the same year fz09/mt09.